by John Marshall, Blight's v. Rochester — Opinion of the Court
“ It is very certain, that these sales do not create a legal estoppel. The defendant has executed no deed to prevent him from averring and proving the truth of the case. If he is bound in law to admit a title which has no existence in realty, it is not on the doctrine of estoppel that he is bound. It is because, by receiving a conveyance of a title which is deduced from Dunlap, the moral policy of the law will not permit him to contest that title. ”
